Authors : Sayed Ali Tabeidian, Mehdi Toghyani, Majid Toghyani and Ahmadreza Shahidpour
Abstract: This experiment was carried out in order to determine the nutritional value of Dried Tomato Pomace (DTP) and the impact of its incremental levels with and without enzyme supplementation on broilers growth performance and ileal protein digestibility. About 384 days old broiler chicks (Ross 308) were raised together until day 7. At 7 days of age chicks were randomly allocated to one of eight treatments with 4 replicates of 12 birds each according to factorial arrangement based on a completely randomized design. Treatments included 0, 3, 6 and 9% of DTP for starter period (7-21 days); 0, 6, 9 and 12% for grower period (21-42 days) and 0, 9, 12 and 15% for finisher period (42-49 days) with and without enzyme supplementation. Body weight gain and feed intake of chicks were recorded at the end of each period and calculated for entire experimental period. Food conversion ratio was also calculated for different periods. At 49 days of age, two male birds per replicate were slaughtered for determination of protein digestibility by chromium oxide marker. Increasing DTP in none-enzyme supplemented treatments resulted in a significant reduction of daily weight gain (p<0.05). Birds fed DTP added diets had a marked (p<0.05) higher daily feed intake at 21-42 days period but enzyme supplementation reduced feed intake. The overall FCR of the experiment was significantly influenced by increasing the inclusion rate of DTP, so that chicks in control group exhibited the most efficient (p<0.05) FCR. Enzyme supplementation improved FCR in different periods compared to none-supplemented groups. Treatments failed to have any statistical (p>0.05) impact on carcass characteristics. There was no deleterious impact of experimental diets observed on ileal protein digestibility. The obtained results suggest that DTP along with enzyme supplementation could be incorporated in broilers diet up to 3, 6 and 9% for starter, grower and finisher periods, respectively without any adverse effect on performance and carcass characteristics.
Sayed Ali Tabeidian, Mehdi Toghyani, Majid Toghyani and Ahmadreza Shahidpour, 2011. Effect of Incremental Levels of Dried Tomato Pomace with and without Dietary Enzyme Supplementation on Growth Performance, Carcass Traits and Ileal Protein Digestibility of Broiler Chicks. Journal of Animal and Veterinary Advances, 10: 443-448.